Automatic vent valve - 1/2" IVAR.VARIA TECNO

Product detailed description

Automatic vent valves are essential components in heating and plumbing systems, ensuring the removal of air from the system to maintain efficient operation. This model is commonly used in residential and commercial buildings, including central heating systems, underfloor heating installations, and hot water circuits. Installers and technicians often encounter the need to integrate these valves into systems where air accumulation could reduce efficiency or cause operational issues. The valve is designed for use with closed-loop systems and must be installed in accordance with system layout and manufacturer guidelines.

Proper venting is critical in maintaining system balance and preventing air pockets that can lead to reduced heat transfer and increased noise. The valve is typically installed at the highest point of the system or at strategic locations to ensure complete air removal. It is not intended for use with open systems or for pressure relief purposes. The side plug must not be used for venting or any other function, as specified in the manufacturer's documentation.

Technical parameters

Code	I00400004
Brand	IVAR

The valve is rated for a maximum discharge pressure of 2.5 bar and operates at temperatures up to +110 °C. These parameters are crucial for determining compatibility with the system's operating conditions. The PN 10 rating indicates the pressure class of the valve, which must align with the system's design pressure to ensure safe and effective operation. The material selection—brass CW617N or nickel-plated brass—also influences corrosion resistance and suitability for different environments.

Installation and connection

The valve is connected using a 1/2 inch thread, which must be properly sealed with appropriate thread tape or sealant. Installers should ensure that the valve is oriented correctly, with the manual stopper positioned at the top for easy access. The side plug must not be used for venting or any other purpose. Common installation errors include incorrect orientation, failure to seal the thread adequately, and attempting to use the side plug for venting. It is essential to follow the manufacturer's instructions for positioning and securing the valve to avoid leaks or operational issues.

Compatibility and accessories

This automatic vent valve is compatible with standard heating and plumbing systems that operate within the specified pressure and temperature ranges. It is typically used in conjunction with radiators, heat emitters, and circulation pumps. No additional accessories are required for standard installation, but installers should verify system compatibility and ensure that all components are correctly sized and rated for the intended application. No related products are listed for this model.

Technical background for designers

The valve operates by allowing air to escape while preventing the loss of water or other fluids. The internal mechanism is designed to open when air is present and close when the system is filled with liquid. The brass CW617N material provides good mechanical strength and corrosion resistance, while the nickel-plated variant offers enhanced protection against oxidation. The integration of the valve into the system must consider the flow dynamics and pressure conditions to ensure optimal performance. Factors such as system temperature, fluid type, and installation location can affect the valve's service life and efficiency.

Service and operation

The valve requires minimal maintenance but should be inspected periodically for signs of wear, corrosion, or blockage. The manual stopper can be used to check for proper operation or to clear minor obstructions. No specific service intervals are provided in the documentation, but installers should follow general maintenance practices for heating system components. If the valve fails to vent air effectively, it may indicate a blockage or a need for replacement.

Frequently asked questions

Can the side plug be used for venting?
No, the side plug is not intended for venting or any other purpose. Venting must be performed using the upper manual stopper only.

Is this valve suitable for open systems?
No, this valve is designed for use in closed-loop systems only. It is not intended for pressure relief or open system applications.

What is the maximum operating temperature?
The valve is rated for a maximum operating temperature of +110 °C. Exceeding this temperature may affect performance or cause damage.

Can the valve be used with hot water systems?
Yes, the valve is suitable for hot water systems that operate within the specified temperature and pressure limits.

Documents for download

• Technical specifications IVAR.VARIA TECNO (PDF)
• Installation instructions IVAR.VARIA (PDF)
• Declaration of conformity (PDF)
• Installation instructions IVAR.VARIA (PDF)
• Technical specifications IVAR.VARIA TECNO (PDF)
• Declaration of conformity (PDF)